JPS6344551Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for preventing a screen door from coming off from an aluminum sash.

Conventionally, this type of technology is generally known to have a structure in which a locking device is attached to the upper stile of the screen door.

However, although the above-mentioned conventional technology has a complicated structure and a precise mechanism, even if such a locking device is used, the frame material that makes up the screen door is still inferior to the frame material of aluminum sash. ,
Since its cross section is small and thin, it easily bends when external force is applied to the frame material of the screen door, causing accidents such as the screen door coming off the lower rail.

The present invention solves the above-mentioned drawbacks by providing a locking device with a simple structure in which a locking piece is rotatably attached to the lower stile of a screen door.

The details of the present invention will be explained below with reference to the drawings.

In Fig. 1, the screen door 1 has a screen 3 stretched over a frame frame consisting of an upper stile (not shown), a lower stile 2, a left vertical stile (not shown), and a right vertical stile (not shown) made of aluminum shapes. in,
Attaching the retaining device 4 of the present invention to the lower stile 2,
By this device 4, the outdoor screen door rail 6 of the window lower frame 5 is
The lower stile 2 of the screen door 1 is attached in a manner that prevents it from coming off.

In FIGS. 2 and 3, the retaining device 4
consists of a retaining piece 7 and a rotating shaft 10 having an axis of rotation perpendicular to the interior surface of the lower stile 2 in order to rotate the retaining piece 7 as shown in FIG.
Incidentally, a horizontal protrusion 8 is also formed on the lower stile 2 to hold the retaining piece 7 when the retaining piece 7 is rotated to release the retaining state.

The retaining piece 7 is a substantially rectangular flat plate, and its upper part is attached to the rotating shaft 10 with a screw or the like on the indoor side of the lower stile 2 of the screen door 1.
Rotatably mounted as a. The material of this retaining piece 7 can be synthetic resin, stainless steel, etc., but in the present case it is a molded plate made of aluminum alloy.

A horizontal protrusion 8 to which the retaining piece 7 is engaged is formed to protrude horizontally from the lower end of the indoor vertical wall of the lower stile 2 of the screen door 1. The horizontal protrusion 8 moves the retaining piece 7 counterclockwise from the broken line state in FIG.
In order to avoid collision with the horizontal protrusion 8 when it is rotated around and hung down, a notch 9 is provided in the horizontal protrusion 8 as shown in FIG.

The installation method of the present invention having the above configuration is to attach the retaining piece 7 to the horizontal protrusion 8 formed on the indoor vertical wall of the lower stile 2 of the screen door 1 at the factory.
A notch 9 is provided in order to avoid collision between the lower part of the retaining piece 7 and the horizontal protrusion 8 when the retaining piece 7 is hung from the vertical wall on the indoor side and when the retaining piece 7 is rotated clockwise. Next, a separately molded retaining piece 7 is rotatably attached to the indoor vertical wall of the lower stile 2 by caulking screws or the like.

In the operation of the present invention, when setting the screen door on the aluminum sash, the retaining device 4 is placed on the lower stile of the screen, with the retaining piece 7 previously locked to the horizontal protrusion 8 (as shown by the broken line in Figure 3). Install it with. After setting the screen door on the aluminum sash, the detachment prevention device 4
If the retaining piece 7 is manually rotated counterclockwise around the rotating shaft 10 beyond the standing state, it will then rotate due to the action of the moment and remain stable in the state suspended from the rotating shaft 10. do.

In this stable state, the lower end of this retaining piece 7 protrudes further downward than the lower end of the lower stile 2, and even if the door roller of the screen door 1 comes off the screen door rail 6, the door roller is generally hidden. Since the lower end of the retaining piece 7 protrudes further downward than the lower end of the stile 2,
Even if the screen door 1 tries to come off toward the outside, the piece 7 that prevents it from coming off
It will no longer get in the way and come off. Furthermore, when removing the screen door 1, the removal can be accomplished by rotating the retaining piece 7 clockwise in FIG.
At this time, if the retaining piece 7 is further rotated clockwise by 180 degrees or more from the hanging state, the retaining piece 7 will eventually rotate and fall due to the rotational moment and hit the horizontal protrusion 8, so that it is stably held.

In addition, although the above embodiment shows the case where the horizontal protrusion 8 is formed directly on the lower stile of the screen door, in the case where the horizontal protrusion 8 is not formed on the lower stile, as illustrated in FIGS. 4 and 5. As shown in the figure, a retaining device 11 consisting of a retaining piece 7' rotatably attached to the vertical wall surface of the angle piece provided with the horizontal protrusion 8' by caulking screws, etc. is attached to the indoor side wall of the lower stile 2' of the screen door. It can also be attached by fitting it into the processed opening 12.

As explained above, according to the detachment prevention device of this invention, even if an external force is applied to the screen door and the frame material of the screen door is bent as a result, the lower stile of the screen door will not come off the screen door rail. In addition, this device can reliably prevent the screen door from coming off with a simple operation of rotating the retaining piece, and is less likely to malfunction.

In addition, because it is manufactured in a factory, only a small number of parts and a small number of machining are required.
The effects of this device are great, such as the fact that it is easy to install.

[Brief explanation of drawings]

FIG. 1 shows an installed state of the device of the present invention, FIG. 2 shows an enlarged sectional view of FIG. 1, and FIG. 3 shows an interior side view of FIG. 2. FIGS. 4 and 5 show a perspective view of another embodiment and its installation state. 2... Lower stile of screen door, 4... Removal prevention device, 6...
... Screen door rail, 7 ... Retaining piece, 8 ... Projection,
9... Notch of the protrusion, 10... Rotating shaft.

Claims (1)

[Scope of utility model registration request] A retaining piece is placed on the interior surface of the lower stile of the screen door, so that when it hangs down, its lower end protrudes further downward than the lower end of the lower stile, and is rotatable about a rotation axis perpendicular to the interior surface of the lower stile. 1. A device for preventing a screen door from coming off, wherein the device is attached and the preventing body is capable of retracting from a hanging state to above the lower end of a lower stile as the preventing body rotates.